Valve



mmm s. E. COLLINS.

VALVE.

No. 411,856. Patented 0st. 1, 1889.,

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UNITED STATES PATENT SAMUEL F. COLLINS, OF BINGI-IAMTON, NEWT YORK.

VALVE.

SPECIFICATION forming part of Letters Patent No. 411,856, dated Octoberl, 1889. Application filed February 14, 1889. Serial No. 299,821. (Nomodel.)

To @ZZ whom, it may concern:

Be it known that I, SAMUEL F. COLLINS, of Binghamton, in the county ofBroome and State of New York, have invented anew and useful Improvementin Valves; and I do hereby declare that the following is a full, clear,and exact description of the same.

My invention is an improvement in valves adapted specially for use insteam pipes and boilers, though it may be used with equally good effectin other situations where controllingvalves are necessary.

"lheinvention consists in the details of construction hereinafter fullydescribed.

In the accompanying drawing the iigure represents a central verticalsection of a globevalve with its piston and operating-handle.

In the drawing the valve-seat is shown at A, and is provided with anannular ring, upon which is seated' the composition ring a of the valveB. 'This valve B is provided with an annular groove in it-s upper andlower face, in which grooves packing-rings are inserted, the lower ringbeing held in place by an overhanging ledge on a collar l, which isitted to the screw-threaded projection 2 of the valve. The upperpacking-ring is held in place by means of a ring 3, which is alsoprovided with an overhanging lip, this ring being adapted to be screwedinto an opening around the spindle() of the valve, the overhanging lipbearing upon the packing-ring. A spindle b is connected to the valve andpasses up through a bon O, Which has a screw-threaded opening fitted toreceive it, the outer periphery ofthe spindle being also screw-threaded,so as to make the action of the valve positive.

Above the screw-threaded part of the box C the ordinary enlargedopeningis formed, as at d, and in this opening suitable packing may beprovided. A screw-threaded cap e,

with an opening in the center for the passage of the valve-stein, fitsover the end of the box C, and between the end of the box and the top ofthe nut e is a recess, in Which packing may also be inserted. The upperend of the valve is also provided with a composition packing-ring or aground seat, Which is adapted to a corresponding seat on the under faceof the box C, and when it is desired to renew the packingit is only necessary to open the valve to its Widest extent until the upper part ofthe valve E is iirinly seated against the under face of the box` G,which thus forms a perfect seal between the chamber of the lvalve andthe opening through the box O, and

the cap e may then be removed and the packing replaced Without anydanger Whatever of leakage.

Nhat I claim isl. In combination, a valve having an annular channel anda screw-threaded central projection on its lower face, a packing-ringt-ting the channel, and a collar provided with a ledge for holding saidring in place, a channel provided with a packing-ring in the upper faceof the valve, a central socket for the end of the valve-spindle, and aring having an overhangin g holding-lip, substantially as described.

2. In a valve, an annnlarchannolon its upper face provided with apacking-ring, a central socket for the end 0l' the valve-spindle, and aring having an overhanging lip to bear on the packing, said rin g fitting around the valvespindle and having screw-threads on. its outerperiphery engaging the screw-threads of the socket, substantially asdescribed.

In testimony whereof I have signed In y naine to this specification inthe presence of two subscribing Witnesses.

SAMUEL F. COLLINS.

Witnesses:

NERI PINE,V EDWIN Evans.

